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Manufacturer number:
Cat. No.:
ER collet chuck Form AD, BT 30 short, for ER collet size: 16
Article no.: 724728
Catalog no.: 303690
Article code:
Product details
Technical Data
| Through-coolant | no | |
| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Cooling lubricant | yes | |
| Holder type | iSO taper | |
| Holder shape | MAS BT | |
| Holder version | dimensionless nominal size without cooling | |
| Holder size, no dimensions | 30 | |
| Type of mounting | hole (internal mounting) | |
| Shank length | 46 mm | |
| Interface on machine side | BT 30 | |
| With flat surface contact | yes | |
| Distance a | 1 mm | |
| Max. clamping diameter | 10 mm | |
| For collet type | ER collet | |
| Collet size | 16 | |
| Gauge length | 60 mm | |
| External diameter, tool-end | 28 mm | |
| External diameter of clamping nut | 33.6 mm | |
| Concentricity | 3 µm | |
| Balance quality G at rotational speed | g 2.5 at 25,000 rpm | |
| Machining strategy | HSC | |
| Format | short | |
| Interface | joint 1; joint 2 | |
| Type of product | collet chucks | |
| Overall length | 108.4 mm | |
| Overall height | 28 mm | |
| Overall width | 28 mm | |
| Standard | ISO 7388-2; JIS B6339 | |
| Shape | AD | |
| With hole for RFID data carrier | yes | |
| Through-coolant available | no | |
| Material | heat-treatable steel | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 724728 | |
| Catalog number | 303690 | |
| EAN / GTIN | 4062406249571 | |
| Manufacturer number | 303690 16 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
Taper ground internally and externally. All shanks hard turned (for smooth running!). With RFID/Balluffchip bore.
- High-quality precision clamping nut.
- Clamping nut balanced for HSM (G2.5/25,000 rpm).
- Optimum wear characteristics and torque transmission due to the coated precision clamping nut.
Advantage:
The double contact between the taper and the flat flange creates a more stable and precise clamping situation:
- Better surface quality
- Longer tool life times
- Consistent seating in the headstock (even at high speeds)
- Smaller radial run-out
Application:
For clamping tools with parallel shank in collets to DIN 6499 Form A and B.
Supplied with:
ER clamping nut.
Optional extras:
ER collets No. 308881 − 309434, ER chuck keys No. 309680 – 309720 or 613300, ER clamping nut 309610.
Pull studs (PS) No. 308760 − 308806. Pull stud wrenches No. 308820; 308835.
Pull studs (PS) No. 308760 − 308806. Pull stud wrenches No. 308820; 308835.